锦屏煌斑岩脉化学灌浆试验施工技术

Construction Technology of Chemical Treatment Test for Lamprophyre in Jinping

锦屏一级水电站双曲拱坝对拱坝肩强度要求极高,而位于拱肩槽基础山体中的煌斑岩松散、强度低。本试验利用YDS系列高渗透性环氧化学浆材对煌斑岩进行改性处理。介绍了煌斑岩脉化学灌浆的施工技术,阐述了高渗透性化学灌浆与水泥常规灌浆不同的灌浆理论,并分析了二者的不同。

Hyperbolic arch dam for grade 1 hydropower station in Jinping has high requirements on arch shoulder strength,but the lamprophyre in basment hills is relax with low strength,so the YDS is adopted to modify the lamprophyre.The construction technology of chemical treatment of lamprophyre is introduced,as well as the theory of chemical treatment and traditional grouting,and different construction technologies between the two methods are comparied.